Network Plan Problem

[BenWall]

Hey techs, I drawing up 3 plans for a college assignment, the 1st 2 were simple STAR networks, with CAT5 & wireless, but for this last one I want to use a fibre optic backbone.

The problem is, I don't know what a back bone is, I have a idea that it might be 3 switches which connect the different rooms, and these switches use fibre as the cable?

I'm on half term now and cant ask my teacher.

Thanks in advance

 

[G_F]

The backbone is just the top layer (hierarchical) of a computer network, to connect to compuers at a lower level of that network.

 

[McBunny]

the backbone refers to the connection between to cabinates usually (switch to switch)

 

[BenWall]

Ok take I look at the pick, where should the fibre optic back bone be in this?

I have the comms cabinet in the corner in main bottom room.

 

[G_F]

Thats what you need to do, its your assignment, you wont learn if someone else does it for you..

[SIZE=-1]A high-speed line (or a series of connections) that forms a major pathway within a network.
www.verio.com/support/files/glossary.cfm

[/SIZE][SIZE=-1]The primary connectivity mechanism of a hierarchical distributed system. All systems which have connectivity to an intermediate system on the backbone are assured of connectivity to each other. This does not prevent systems from setting up private arrangements with each other to bypass the backbone for reasons of cost, performance, or security.
largebande.gc.ca/pub/technologies/bbdictionary.html

[/SIZE][SIZE=-1]the underlying network communication conduit or line by which all main servers and devices are connected; backbone devices are typically servers, routers, hubs, and bridges; client computers are not connected directly to the backbone.
www.sunrise.uk.com/glossary.html

[/SIZE][SIZE=-1]The top level of a hierarchical network. The main pipes along which data is transferred. The "Internet backbone" is sometimes referred to, though it doesn't exist.
www.netdictionary.com/b.html

[/SIZE][SIZE=-1]In a network, a backbone is a larger transmission path into which smaller lines feed. At the enterprise level, a backbone is a line or set of lines that local area networks connect to for a wide area network connection or within a local area network to span distances efficiently (for example, between buildings).
www.sidetrips.com/support/glossary_a_l.asp

[/SIZE][SIZE=-1]the part of a network that connects other networks together; "the backbone is the part of a communication network that carries the heaviest traffic"
wordnet.princeton.edu/perl/webwn[/SIZE]

 

[G_F]

Read up on [SIZE=-1]network topologys[/SIZE]

 

[BenWall]

thanks for that, I was asking for someone to do it, just for help, whats wrong with that???

 

[BenWall]

Read up on [SIZE=-1]network topologys[/SIZE]

I know what the topologies are, I wasn't aware that a back bone was a topology. See here.

 

[G_F]

If i mapped the cabling for you in that pic, you still wouldn't understand the reason behind it.

EDIT:

Read up on [SIZE=-1]network topologys[/SIZE]

I know what the topologies are, I wasn't aware that a back bone was a topology. See here.

Its not, but read through that link you posted again.

 

[McBunny]

tbh in the pic you posted there is no backbone except the internal backbones in the switches all the switches would be uplinked via trunks (quitepossible it is fiber tho)
and the workstations are all connected via structured cabling back to the switches


so to sum it up your pic has no back bone

 

[McBunny]

and on the link you posted the bus topology is for bnc

ring is for tolken ring mainly(long dead) (if used with ethernet it costs ALOT)

there is another type of topology called the piece of s**t i have here topology that is basically a tree mixed with a mesh lol

 

[TheCake]

Backbone example.

Second Floor Office

10 computers and 2 printers all cabled into a cabinet which contains a switch which has fibre in/out.


First Floor Office

20 computers and 5 printers all cabled into a cabinet which contains a switch which has fibre in/out.

Ground Floor Office

5 computers and 1 printers all cabled into a cabinet which contains a switch which has fibre in/out.

Basement

A large cabinet which all the previous floors connect into.

The backbone is effectively the fibre optic high-speed core of your network that provides the data connectivity from your basement (where all your servers are) to your end users.

Hope that helps and was what you were after,

 

[McBunny]

dont laugh only have paint on this laptop lol

 

[G_F]

so to sum it up your pic has no back bone

It would have three backbones.

 

[McBunny]

in text cab to cab = backbone usually fiber

cab to pc = structured cat 5/6 ethernet

inter switch in cab = either fiber uplinks or cat 5/6
inside switch=what ever the switch manufacturer wants but very very fast also called a backbone

 

[McBunny]

so to sum it up your pic has no back bone

It would have three backbones.

his pic has 3 switches all in the same cabinate and no other switches that i can tell unless those little boxes are switches but he doesnt say and in room 1 it says workstations are wired to the switch so there would be a max of 2 backbones if those little boxes are switches

 

[McBunny]

in real life you would have a cabinate in each one with a switch in each going back to a centeral room 4th room making it a star

 

[McBunny]

oh and whats providing dns in your diagram

 

[G_F]

If you think of them three Switches as the centre of the network, you then have 3 lines going into each room (doesn't matter what they connect to or what type of cabling it is) but take them away and there is no network, so you would ultimately define these as cabling backbones. (room 1 has no other means to send packets to room 2 etc)

In a network, a backbone is a larger transmission path into which smaller lines feed

would be a better quote for a backbone, hardware doent come into it.

 

[McBunny]

for all intents and purposes they way its drawn every pc could connect straight to the swich like it does in room 1

 

[McBunny]

In a network, a backbone is a larger transmission path into which smaller lines feed

i agree but it needs to be consolodated first by a switch

 

[McBunny]

 

[BenWall]

Backbone example.

Second Floor Office

10 computers and 2 printers all cabled into a cabinet which contains a switch which has fibre in/out.


First Floor Office

20 computers and 5 printers all cabled into a cabinet which contains a switch which has fibre in/out.

Ground Floor Office

5 computers and 1 printers all cabled into a cabinet which contains a switch which has fibre in/out.

Basement

A large cabinet which all the previous floors connect into.

The backbone is effectively the fibre optic high-speed core of your network that provides the data connectivity from your basement (where all your servers are) to your end users.

Hope that helps and was what you were after,

Thanks Cake, thats made sense, I know what to do know. Plain and simple lol.

 

[G_F]

for all intents and purposes they way its drawn every pc could connect straight to the swich like it does in room 1

They will be connected to routers, which will connect to the switches, thats how i make that pic out

 

[TheCake]

No probs bud

 

[McBunny]

unless they are seperate subnets there is no need for routers and i couldnt imagine they would be seperate subnets cant see much need

anyway instead of using routers you would be better off with one layer 3 switch and vlan it

 

[G_F]

We dont know his brief, so am unsure what you are talking about.

... but in the pic he posted, in all three rooms, the nodes connect to their router which is connected to the switches.

The cabling that connects the switches to the routers (three of them) would be defined as the backbone(s)

 

[McBunny]

anyway i think we both agree he should fail it himself with no aditional help from us

 

[G_F]

In that example ther would be two backbones

EDIT: The above is right if you take away the WAN links, this is a redundent network.

 

[G_F]

anyway i think we both agree he should fail it himself with no aditional help from us

Indeed. lol

In reality its the most stupid network i have seen, in regards to redundancy

 

[McBunny]

there is no router in room 1 except the one that goes to the net

those boxes in room 2 and 3 i cant see been routers as routers are only usually 2 port (each side of the divided network) so they would need to connect to a switch/hub first before a router and there sure as hell isnt 2 boxes in each room

so lets take it as those 2 boxes (1 in each room) are switches if that is the case then between them and the 3 big framework swiches would be a backbone but if thats the case why is there 3 switches as there isnt enough nodes in room 1 to need a 3 switches !!! (they are cabled straight to the switch as it says in the diagram). if you did that then you would have a bottle neck of all the pc's in room 2 trying to get down 1 cable back to the big under used switches same with room 3

so to me the network diagram is very flawed and wasting resources


if i had viso on me i could do you a nice pic showing what i mean lol

 

[McBunny]

best design would be if all the nodes are less than 95 meters away from the cabinate is to wire one cable from each node to the cabinate then stick something like a hp procurve 5304xl routing switch in the cabinate that way they can all have gig speeds and be switched using just one device

 

[BenWall]

I am in my 1st year of networking at college not uni, so give me a break. I'm not going to be as good as you two that more than likely do it for a living.

I have 2 servers, NET > router > Switch > Servers and Workstations, and other switch in rooms 2 & 3 > workstations

I have done it the best I can from what I have been taught, my teacher says its distinction standard work, and thats all that matters, I don't see how I am wasting resources etc. But hey. Almost done now

 

[TheCake]

Its sounds very much like a cut-down Cisco CCNA case study from Semester 4.

Don't worry Conteo some us have been doing this kind of stuff for sometime bud

 

[McBunny]

your waisting resources because you only need 1 switch when you link switches together you only share data at the speed of the port usually 1 gig

if you have all your lines going into 1 switch they share data across its internal backbone in the case of that hp switch i mentioned thats 38Gbps!

 

[McBunny]

Its sounds very much like a cut-down Cisco CCNA case study from Semester 4.

Don't worry Conteo some us have been doing this kind of stuff for sometime bud

too bloody long !!!:dead:

 

[BenWall]

your waisting resources because you only need 1 switch when you link switches together you only share data at the speed of the port usually 1 gig

if you have all your lines going into 1 switch they share data across its internal backbone in the case of that hp switch i mentioned thats 38Gbps!

But surly the distance is a factor when only using one switch, and the Gig speeds are a overkill as its only a training center, saving MS documents etc to the server, 100/1000mb/s will be sufficient, having gig network when not needed would be wasting resources no?

 

[McBunny]

it depends lol faster speeds = more productivity and futurproofing

as clarkson says "POWER!!!!!!

regarding distance the longest the cable can be is 100 meters (it can go further but the rfc wont put it down on paper) but i my self wouldnt go over 95 meters

as for it been a training center you didnt say and anyway it could be a nasa training center

 

[McBunny]

your waisting resources because you only need 1 switch when you link switches together you only share data at the speed of the port usually 1 gig

if you have all your lines going into 1 switch they share data across its internal backbone in the case of that hp switch i mentioned thats 38Gbps!

But surly the distance is a factor when only using one switch, and the Gig speeds are a overkill as its only a training center, saving MS documents etc to the server, 100/1000mb/s will be sufficient, having gig network when not needed would be wasting resources no?

by the way 1000Mb/s is gigabit

your only really getting overrkill when using 10GbE

 

[BenWall]

what you think to this?